Have you ever picked up a rock and wondered how it was made or where it came from? You’re not alone. Rocks may seem ordinary, but they hold incredible stories about the Earth’s history—millions (even billions!) of years in the making. Whether you’re a curious student, an outdoor enthusiast, or someone just getting into geology, … Read more
The effects of dissolution are well illustrated by the formation of caves, sinkholes (dolines) and other karst features. Atmospheric and soil carbon dioxide, produced largely by organic respiration and bacterial decomposition, combine with water to produce carbonic acid, which progressively dissolves carbonate or evaporite minerals (Figure). Karst features are particularly common in warm, humid climates … Read more
The classification of sedimentary particles based on their size is an essential aspect of sedimentology, helping geologists interpret depositional environments, transport mechanisms, and energy conditions. One of the most widely used systems for this purpose is the Wentworth Grain Size Scale, developed by Chester K. Wentworth in 1922. The Wooden Wentworth Scale, a practical tool … Read more